A term for differing schools of political campaign theory, originated by ABCNEWS' The Note internet report referring to the Iowa caucuses of January 2004. "Mo" refers to momentum, or the last-miute media impact of a candidacy, whereas "O" refers to organization, the ground troops of a campaign fomenting a result.

For interest, "Mo" triumphed in Iowa 2004, as the insurgent campaigns of John Kerry and John Edwards soundly defeated the old frontrunners Howard Dean and Dick Gephardt.